Once the glorious Earth-Warder, the black dragon Deathwing is now a world-shaking avatar of destruction.
Deathwing was originally the black dragon Neltharion, leader of the black dragonflight and one of the five Dragon Aspects. He was given dominion over the earth by the titans, shapers of worlds. The Old Gods, twisted beings of pure evil that once ruled Azeroth, drove Neltharion to madness, and he turned against the other Dragon Aspects. Deathwing spurred the Second War by sabotaging the Alliance in the guise of Daval Prestor, a human lord, and helping the Horde enslave the red Dragon Aspect, Alexstrasza. He was defeated by the Aspects and fled to the depths of the elemental realm of Deepholm to plot revenge.
Deathwing returned to Azeroth after the fall of the Lich King, emerging in a world-breaking wave of destruction known as the Cataclysm. At the height of his power, Deathwing's goal was nothing less than the Hour of Twilight: the end of all life on Azeroth. In this nihilistic aim, the former Aspect was supported by the Twilight's Hammer cult and the elemental lords Al'Akir and Ragnaros. The Dragon Aspects, aided by the shaman Thrall, once again stood against Deathwing, and sent brave adventurers back in time to obtain the Dragon Soul, the only weapon capable of defeating the Destroyer.